The weak cosmic censorship conjecture (WCCC) [1]}, [2]} is one of the unproved conjectures in classical general relativity. It is proposed by Penrose [1]} and states that there is no naked singularity in our universe. This conjecture ensures that the spacetime singularity caused by the gravitational collapsing body is always hidden inside the event horizon of the black hole. It also means that any physical process cannot destroy the black hole and cause the naked singularity. To examine the WCCC, Wald proposed a gedanken experiment in 1974 [4]}, in which they considered a test particle throwing into an extremal Kerr-Newman (KN) black hole and showed that any particles which can enter the horizon cannot destroy the black hole under first-order approximation. After that, Hubeny [5]} started with a nearly extremal black hole and found that there exists some situation under the second-order approximation where the black hole can be destroyed if the test particle satisfies some certain conditions. Since then, Hubeny-type violations were found in many black holes and gravitational theories [6]}, [7]}, [8]}, [9]}. However, this method viewed the black hole as a background and does not consider the second-order effects, such as the self-force effect, radiative and finite-size effects [6]}. Later, numerical simulation considering the self-force effect on particles indicates the Hubeny-type violation will not happen [11]}, [12]}, [13]}, [14]}.
